bug#25303: 24.5; `write-region' enhancement request for MUSTBENEW parameter

[Lars Ingebrigtsen]

Drew Adams <drew.adams@oracle.com> writes:

> If parameter MUSTBENEW is not `excl' and is non-nil then the user is
> prompted to confirm overwriting.  The enhancement would be that if the
> value is a string then use that as the confirmation prompt.
>
> The would allow for more specific prompting, such as saying something
> more than that the file exists - something that can help the user decide
> whether to overwrite.

I think that does make some sense, but do you have a specific scenario
in mind?  What kind of prompt would help the user more than the standard
prompt here?

> This is pretty much backward compatible: In existing code it is likely
> that few, if any, non-nil and non-`excl' arg values are strings.  And in
> the case of any that are, the use of the string as a prompt will make
> things obvious to a maintainer, if not immediately to the user.

It's a slightly non-compatible change, but I think it sounds unlikely to
be bothersome (as you point out).

Anybody else have an opinion here?

-- 
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   bloggy blog: http://lars.ingebrigtsen.no